Highway are a poor analogy for information broadcast systems in general. Highways are closer to a one to one transmission system rathe than a broadcast system of one to many.
If Google, or CF, or whoever are fronting illegal activity with their services, they are absolutely responsible for damages the party they are proxying.
Platforms must be responsible for the content they are hosting, broadcasting, and publishing.
One to one communications between two people exchanging ideas and having a private discussion is different from mass broadcasting.
Start dancing. I started swing and jazz dancing a couple of years ago. The community is awesome, and you get to meet loads of people. There are regular events all over the world.
I'm Scots, not British. Roughly 50% of us support independence from the UK.